🛒 Shopping carts

This page explains how shopping carts work for both anonymous (guest) visitors and logged-in customers.

• An anonymous shopping cart belongs to a visitor who isn't logged in. It's identified only by a unique ShoppingCartId, stored in the visitor's browser.
• A user shopping cart belongs to a logged-in customer account (CustomerNumber is set). A customer can have at most one active cart.

🔀 What happens to your cart when you log in

When a visitor with products in their anonymous cart logs in, those products shouldn't disappear — they need to end up in the customer's own cart. The diagram below shows how that merge works, and why logging out afterwards leaves an empty anonymous cart.

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